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Validation of large eddy simulation with wind tunnel experiment for urban canopy ventilation
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SYSNO ASEP 0429213 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Validation of large eddy simulation with wind tunnel experiment for urban canopy ventilation Author(s) Kukačka, Libor (UT-L) RID
Fuka, V. (CZ)
Nosek, Štěpán (UT-L) RID, ORCID
Jaňour, Zbyněk (UT-L) RID, ORCIDSource Title 6th International Symposium on Computation Wind Engineering. - Hamburg : Meteorological Institute, CEN, University of Hamburg, 2014 / Schlunzen K. H.
S. 150-151Number of pages 2 s. Publication form Print - P Action International symposium on computation wind engineering /6./ Event date 08.06.2014-12.06.2014 VEvent location Hamburg Country DE - Germany Event type WRD Language eng - English Country DE - Germany Keywords urban canopy ventilation ; urban-area geometry ; wind tunnel ; large eddy simulation ; numerical model validation Subject RIV DG - Athmosphere Sciences, Meteorology R&D Projects GAP101/12/1554 GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 Annotation Ventilation in an idealised urban area with a complex geometry was investigated by a large eddy simulation LES and a wind tunnel experiment. In the wind tunnel, we assembled an experimental set-up for simultaneous measurement of velocity and concentration. The Charles University Large eddy Microscale Model (CLMM) solving the incompressible Navier-Stokes equations was used for numerical computing of the problem. We focused on the street canyon situated perpendicular to the approach flow and equipped by a line source of tracer gas. Vertical advective and turbulent pollution fluxes were computed as ventilation characteristics in three horizontal grids in different heights within the street canyon. A validation of LES numerical model was evaluated using the Hit Rate and the Factor of two observations FAC2 metrics. The model was successfully validated only for concentration and for a part of longitudinal velocity data. The possible problems in LES modelling are discussed. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2015
Number of the records: 1